Method and apparatus for treating coated material



May'20, 1930. 4 I v. H. WILSHIRE IBTHOD AND APPARATUS FOR TREATING COATED IATERIAL Filed Feb. 19, 1926 2 Sheets-Sheet 1 May 20, 1930. v. H. WILSHIRE 1,759,600

METHOD AND APPARATUS FOR TREATING COATED MATERIAL Filed Feb. 19. 1926 2 Sheets-Sheet 2 I or Vwawmhm Quanta Patented May 20, 1930 UNITED ST TES.

PATENT OFFICE I van mm wrnsma, or DAYTON, OHIO, nssrenoa r0 ran srncmnrx reruns coliraw, or DAYTON, cnro, A coaroaa'rron or 01110 ammo!) AND urnnarus roa rnnn'rm'e comm) Mei-mam application filed February 19,1928. Serial No. 89,849.

This inventionrelates to a method and ap paratus for coating or impregnating a web of fibrous material, and relates more particularly to a method and apparatus for coating I paserwith paraflin:

ne of the principal objects ofthe inven tion is to provide--a novel apparatus and method of removing water or other liquid from the web of a coated material after it has been subjected to the action of cooling material may The present invention is herein illustrated in connectionv with amachine for coating a per with parafiin wax, but it will be un erstood thatthe invention is susceptible of other uses.

In the embodiment ofithe invention illustrated in Fig. 1, 10 designates a supply roll of the-paper to be waxed. From .the supply roll .the paper 11 is led under a roll=12 and over rolls 13 and 14 and thence under a guide roll -15 which is mounted in tank 16 in such position as to guide the paper below the level of melted paraflin wax in the tank 16; such melted p'arafiin wax, being indicated by the reference numeral 17. Any suitable means,

may be provided for maintaining the paraflinor othercoating material in such a condition as to properly coat or impregnate the paper or web of fibrous material passing therethrough, and further it should be .un-

derstood that any other suitable or desired means of applying thejcoating to. the fibrous e employed.

From the roll 15 the web of aper passes between the rolls 20 and 21 whic are preferably so mounted or supported that the space between them may be yaried as desired, and

' which in'practiceLare so spaced as to control the thickness of the coating of paraflin wax left on the paper, the excess being squeezed, a" small guide roll 53. Each sideof the paper l Figsl'2 to 9 show alternative iforms of my invention.

back between the rolls and returned to th( tank 16. From the rolls 20 and 21 the web of paper passes over the rolls 30, 31- and 32 which'are adapted for ironing or smoothing the coatin of paraflin wax. Preferably these rolls are rotates withthe paper and at the samesurtace speed.- R01 s 31 and 32' maybe held stationary or rotated in a direction either the, same or opposed to the direction of ,travel oi the web 0 paper, as may be desired it beinF merely desirable that therebe a suitable re 85 eated in any suitable manner, as by means of steam. The roll'30 preferably ative motion between the surfaces of the rolls and the coated paper assin thereover;

Upon leaving the ro 32 t e webof paper passes under rolls 40 and 41 mbunted in such position in a tank 42 as to can e the paper to pass through a liquid bath. n the embodiment of the invention illustrated this liqlud is water; but other suitable liquid adapted to cool and set the wax coating may be used.

As the web of waxed paper emerges from the water bath it passes over drying means .for removing from the paper such water as may adhere thereto when the paper leaves the water bath, and for drying the same in, order to prevent spotting of the waxed paper which may result if the water is not removed from the pa er. And after leaving the drying means. t e'paper vpasses on to a winding reel which. may be of an suitable construction, where it is wound nto a roll. 1 The method of drying waxed paper in accordance with this invention consists in blotting up the globules of water or liquid which may adhere to the surface of the pa er after it'comes from the water bath, and or practising this method several mechanisms or means varying in construction and'a'rrangement of parts may be used. Inasmuch as water adheres to both sides of the paper means is provided upon each side of the paper for removing the water therefrom.

One embodiment off such means fofdryingthe paper is illustrated in Fig. 1 wherein is shown two 'du licate-means, each compris--.

ing an" endless lt-51 of; blotting material which passes overla large guide roll 52 and :is brought into contact with one of the blottin materials for .a suflicient time to enable suc h blottin materials to take up and remove the glo ules or film of water rom both sides of the paper, and as shown the paper is in contact with the blottin materials while passing over the large guide roll 52. Preferably the belt of blotting material is moved at the surface speed of the web of paper and in the same direction. Suitable means may be provided for maintaining the blotting materials in condition for continuously and ef-- fectively absorbing the water from the web of paper, and such means may comprise pro visions for drying the blotting material or otherwise removing the water therefrom. As illustrated in pass over the conduits.

In Fig. 2 there is illustrated a form of drying mechanism in which the blotting material 7 0 may be wound from a mandrel 71 onto a mandrel 72, such blotting material passing over a guide roll 52' whereby it is brought into contact with the paper 11 to remove the water therefrom. In this form of the drying means, when the supply of blotting material has been exhausted from the mandrel 71, the machine may be stopped and the mandrels replaced by other mandrelscarrying fresh blotting material, or the mandrels 71 and 72 may be reversed so as to reroll the blotting material upon the mandrel 71. In this figure, as in each of the other modifications shown, only one of the drying means is illustratedit being understood however, that two such means will ordinarily be used as is shown in Fig. 1; but since these two means will be of duplicate construction pnly one is shown to illustrate the construc- In Fig. 3 there is shown another form of drying means in which the blotting aterial is formed as an endless belt 75 passing over the guide rolls 52-, 77 and 78, the blotting material being brought into blotting relationship with the waxed paper as it is passing over the guide roll 52". In this form of the invention the endless belt of blotting material passes through a drying chamber 79 provided with burners 80, or other suitable arrangements, for heating the blotting material andvaporizing the water therefrom; Fig. 4 shows a form of drying means resembling that illustrated in Fig. 1, there ig. 1, a plurality of con-v duits '54 are provided whichmay be conbeingan endless belt of blotting material 82 l invention is also provided with a suction nozzle 89 for withdrawing, by suction, water from the blotting material 88 to maintain the 7 same in blotting or absorbing condition.

In each of the forms of drying means shown in Figs. 5 and 6 there is illustrated a hollow drum or cylinder 91 havin perforations or openings 92 in its cylindrical surface, the cylindrical surface of the drum carj rying a covering of blotting material 93 .which is brought into absorbing relationship with the paper 11 as the drum rotates.

These forms of the inventionare provided with suction nozzles 94-. which may be either 1 external to the cylinder as shown at 95 in Fig. 5, or internal as shown at 96 in Fig. 6. In either case the air is drawn through the blotting material and through the apertures 92 of the cylinder to dry the blotting material. Of course, if desired pressure air may be fed to the' nozzles 95 and 96 and forced. through the blotting material to fiCCOHlPllSh the drying thereof.

The blotting material for blotting up or absorbing the water from the wax? paper may be of any suitable material such as paper, felt or other flexible fibrous material. Such blotting material constitutes in its broadest sense a vehicle or conve or for taking up and removing the moisture om the web of paper. Although the blotting material has been described generally as consisting of fibrous material, it should be understood that the vehicle or carrier for removin the water is not limited to a fibrous material, but may be of any such construction as will remove the water from the paper by capillary action, or otherwise.- One such form of carrier or vehicle the wire 98 by means of a suction nozzle 99, y

or it may be blown from the wire by an plying compressed air to the nozzle 99, it ein understood that the nozzle 99 may be located on the interior of the roll as desired in a position similar to the nozzle shown in 6. If the quantity of water which adheres to the paper is not too great, it may be removed from the paper b passing the paper over a roll of plain meta or other mater1al, and then removed from the rollelzly suction or pressure means such as describ above.

Also the. water taken up by the blotting material may be removed therefrom-to a satisfactory. degree-by means of squeeze or wringer rolls '100, as shown in Fig. 9. These rolls may be constructed and operated in any conventional manner, as widely used in washing machines, for example.

In the several forms of the invention there have been described and illustrated nozzles or means of supplying dryin air under pressure to the blotting materia or of applying suction to the blottmg material for removmg the water, but inevery case it should be understood that the nozzles ma either be supplied with hot or cold air un er pressure for lowing the water out of the blottingJ material or-vaporizing the same, or may e connected with suitable vacuum or suction means for sucking the water out of the blotting material, either as a liquid or as a vapor. Although the invention is herein described and shown as a method .and apparatus for blottinglwater from the web of fibrousmaterlal, 1 s term blotting or blotter is employed in the specification and claims it is intended that such term shall be interpreted broadly to ould be understood that wherever the sorb surface liquid fromthe plaper and to carry it'to a point remote from t e aper, and means for removing liquid from t e carrier vehicle at said remote point.

4. In a machine for treating paper or the likei a dryer for removing surface liquid from sa1 ed to receive the liquid from the paper and to carry it to a point remote from the paper, and means for causing relative motion between said carrier and a body of air at said remote point whereby to remove liquid from said carrier.

5. p The method of waxing paper which comprises applying a coating 0 paraflin. to a traveling web of paper, conducting the paraffined paper through water. blottin the surface water from both sides of I e carrying the water so blotted to a pomt remote from the traveling paper web, and then removing the water from the blotter, the blotting of the water from both sides of the traveling paper web being carried out simultaneg ilsly with the removal of the water from the otter.

In testimony. whereof I hereto afiix my signature.

' VAN HAMM WILSHIRE.

cover any method and ap aratus wherein the water is removed from t e web by a carrier or medium which removes the water from the web by ca illary attraction or otherwise and carries suc removed water to a point remote from the web.

While the method herein described, and the form of apparatus for carrying this method into effect, constitute preferred embodiments of the invention, it is to be understood that the invention is'not limited to this method and form of apparatus, an that changes may be made in either without derecise parting from the scope of the invention which I is defined in the appended claims.

What is claimed 1s: Y

1. The method of treatingpapen'or the like, which consists in applymg a coating of parafiin to the aper, ex osing the coated paper to the action of a hquid and then removln the surface liquid without marring its sur ace by blotting the same.

2. A machine for coating paper, or

like, comprising means for applying acoating of paraffin to said aper, means for sub- ]ectmg the paper to t e action of a liquid after the application of the coating material,

and blotting means movable with the aper' for absorbing liquid from the surface 0 'said paper without marring its surface. 7

' 3. In a machine for waxing paper, a dryer comprising a carrier vehicle adapted to abpaper Without marrlng the surface of the paper comprising a carrier vehicle adaptaper,

as i 

